Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailNeurophysiological tests and neuroimaging procedures in non-acute headache (2nd edition).
Sandrini, G.; Friberg, L.; Coppola, G. et al

in European Journal of Neurology (2011), 18

Background and purpose: A large number of instrumental investigations are used in patients with non-acute headache in both research and clinical fields. Although the literature has shown that most of ... [more ▼]

Background and purpose: A large number of instrumental investigations are used in patients with non-acute headache in both research and clinical fields. Although the literature has shown that most of these tools contributed greatly to increasing understanding of the pathogenesis of primary headache, they are of little or no value in the clinical setting. Methods: This paper provides an update of the 2004 EFNS guidelines and recommendations for the use of neurophysiological tools and neuroimaging procedures in non-acute headache (first edition). Even though the period since the publication of the first edition has seen an increase in the number of published papers dealing with this topic, the updated guidelines contain only minimal changes in the levels of evidence and grades of recommendation. Results: (i) Interictal EEG is not routinely indicated in the diagnostic evaluation of patients with headache. Interictal EEG is, however, indicated if the clinical history suggests a possible diagnosis of epilepsy (differential diagnosis). Ictal EEG could be useful in certain patients suffering from hemiplegic or basilar migraine. (ii) Recording evoked potentials is not recommended for the diagnosis of headache disorders. (iii) There is no evidence warranting recommendation of reflex responses or autonomic tests for the routine clinical examination of patients with headache. (iv) Manual palpation of pericranial muscles, with standardized palpation pressure, can be recommended for subdividing patient groups but not for diagnosis. Pain threshold measurements and EMG are not recommended as clinical diagnostic tests. (v) In adult and pediatric patients with migraine, with no recent change in attack pattern, no history of seizures, and no other focal neurological symptoms or signs, the routine use of neuroimaging is not warranted. In patients with trigeminal autonomic cephalalgia, neuroimaging should be carefully considered and may necessitate additional scanning of intracranial/cervical vasculature and/or the sellar/orbital/(para)nasal region. In patients with atypical headache patterns, a history of seizures and/or focal neurological symptoms or signs, MRI may be indicated. (vi) If attacks can be fully accounted for by the standard headache classification (IHS), a PET or SPECT scan will normally be of no further diagnostic value. Nuclear medical examinations of the cerebral circulation and metabolism can be carried out in subgroups of patients with headache for the diagnosis and evaluation of complications, when patients experience unusually severe attacks or when the quality or severity of attacks has changed. (vii) Transcranial Doppler examination is not helpful in headache diagnosis. Conclusion: Although many of the examinations described in the present guidelines are of little or no value in the clinical setting, most of the tools, including thermal pain thresholds and transcranial magnetic stimulation, have considerable potential for differential diagnostic evaluation as well as for the further exploration of headache pathophysiology and the effects of pharmacological treatment. [less ▲]

Detailed reference viewed: 55 (1 ULg)
Full Text
Peer Reviewed
See detailNeurophysiological tests and neuroimaging procedures in non-acute headache: guidelines and recommendations
Sandrini, G.; Friberg, L.; Janig, W. et al

in European Journal of Neurology (2004), 11(4), 217-224

The use of instrumental examinations in headache patients varies widely. In order to evaluate their usefulness, the most common instrumental procedures were evaluated, on the basis of evidence from the ... [more ▼]

The use of instrumental examinations in headache patients varies widely. In order to evaluate their usefulness, the most common instrumental procedures were evaluated, on the basis of evidence from the literature, by an EFNS Task Force (TF) on neurophysiological tests and imaging procedures in non-acute headache patients. The conclusions of the TF regarding each technique are expressed in the following guidelines for clinical use. 1 Interictal electroencephalography (EEG) is not routinely indicated in the diagnostic evaluation of headache patients. Interictal EEG is. however, indicated if the clinical history suggests a possible diagnosis of epilepsy (differential diagnosis). Ictal EEG could be useful in certain patients suffering from hemiplegic and basilar migraine. 2 Recording of evoked potentials is not recommended for the diagnosis of headache disorders. 3 There is no evidence to justify the recommendation of autonomic tests for the routine clinical examination of headache patients. 4 Manual palpation of pericranial muscles, with standardized palpation pressure, can be recommended for subdividing patient groups but not for diagnosis. Pressure algometry and electromyography (EMG) cannot be recommended as clinical diagnostic tests. 5 In adult and paediatric patients with migraine, with no recent change in attack pattern, no history of seizures, and no other Focal neurological signs or symptoms, the routine use of neuroimaging is not warranted. In patients with atypical headache patterns, a history Of seizures and/or focal neurological signs or symptoms, magnetic resonance imaging (MRI) may be indicated. 6 If attacks can be fully accounted for by the standard headache classification [International Headache Society (IHS)], a positron emission tomography (PET) or single-photon emission computerized tomography (SPECT) and scan will generally be of no further diagnostic value. 7 Nuclear medicine examinations of the cerebral circulation and metabolism can be carried out in Subgroups of headache patients for diagnosis and evaluation of complications, when patients experience unusually severe attacks, or when the quality or severity of attacks has changed. 8 Transcranial Doppler examination is not helpful in headache diagnosis. Although many of the examinations described are of little or no value in the clinical setting, most of the tools have a vast potential for further exploring the pathophysiology of headaches and the effects of pharmacological treatment. [less ▲]

Detailed reference viewed: 48 (0 ULg)
See detailNeurophysiologie du rêve et régulation des émotions
Desseilles, Martin ULg

Scientific conference (2015, November 30)

Detailed reference viewed: 9 (0 ULg)
See detailNeurophysiology and autonomic dysfunction in migraine
Schoenen, Jean ULg; Thomsen, L. L.

in Olesen, J.; Tfelt-Hansen, P.; Welch, K. M. A. (Eds.) The Headaches (1999)

Detailed reference viewed: 34 (0 ULg)
Full Text
Peer Reviewed
See detailNeurophysiology of hypnosis
VANHAUDENHUYSE, Audrey ULg; Laureys, Steven ULg; Faymonville, Marie-Elisabeth ULg

in Clinical Neurophysiology (2014), 44

We here review behavioral, neuroimaging and electrophysiological studies of hypnosis as a state, as well as hypnosis as a tool to modulate brain responses to painful stimulations. Studies have shown that ... [more ▼]

We here review behavioral, neuroimaging and electrophysiological studies of hypnosis as a state, as well as hypnosis as a tool to modulate brain responses to painful stimulations. Studies have shown that hypnotic processes modify internal (self awareness) as well as external (environmental awareness) brain networks. Brain mechanisms underlying the modulation of pain perception under hypnotic conditions involve cortical as well as subcortical areas including anterior cingulate and prefrontal cortices, basal ganglia and thalami. Combined with local anesthesia and conscious sedation in patients undergoing surgery, hypnosis is associated with improved peri- and postoperative comfort of patients and surgeons. Finally, hypnosis can be considered as a useful analogue for simulating conversion and dissociation symptoms in healthy subjects, permitting better characterization of these challenging disorders by producing clinically similar experiences. [less ▲]

Detailed reference viewed: 85 (8 ULg)
See detailNeurophysiology of migraines
Schoenen, Jean ULg; Aurora, S.

in Olesen, J.; Goadsby, P.; Ramadan, N. (Eds.) et al The Headaches (2005)

Detailed reference viewed: 17 (1 ULg)
See detailNeurophysiology of tension-type headache
Schoenen, Jean ULg; Bendtsen, L.

in Olesen, J.; Tfelt-Hansen, P.; Welch, K. M. A. (Eds.) The Headaches (1999)

Detailed reference viewed: 12 (0 ULg)
See detailNeurophysiology of tension-type headache
Schoenen, Jean ULg; Bendtsen, L.

in Olesen, J.; Goadsby, P.; Ramadan, N. (Eds.) et al The Headaches (2005)

Detailed reference viewed: 15 (0 ULg)
See detailNeuroplasticité saisonnière chez le canari adulte (Serinus canaria): expression des protéines Doublecortin et Reelin et modulation par les hormones stéroïdes, la photopériode et l'environnement social.
Boseret, Géraldine ULg

Doctoral thesis (2008)

Dans de nombreuses espèces d’oiseaux chanteurs (ou Passériformes), dont fait partie le canari domestique (Serinus canaria), le comportement de chant est produit à la fois pour défendre un territoire ou ... [more ▼]

Dans de nombreuses espèces d’oiseaux chanteurs (ou Passériformes), dont fait partie le canari domestique (Serinus canaria), le comportement de chant est produit à la fois pour défendre un territoire ou attirer un partenaire. Le Système de Conntrôle du Chant est un réseau nerveux central spécialisé, principalement localisé au niveau du télencéphale et associé au contrôle de l’apprentissage, la perception et la production du chant. Ce comportement a été décrit subir la modulation de facteurs externes, tels que la testostérone, la photopériode et les interactions sociales. En parallèle avec le comportement de chant, certains des noyaux appartenant au Système de Contrôle du Chant (HVC, RA et Area X) présentent un phénomène de plasticité saisonnière nerveuse fascinante. Le volume de ces noyaux augmente notamment par espacement des cellules, agrandissement de la taille du neuropile et de l’arborisation dendritique et, dans le cas particulier d’HVC, par incorporation de neurones nouveaux-nés. Nous proposons ici une synthèse de la littérature concernant ce phénomène tout à fait particulier ; en effet, la régénération des neurones du système nerveux central est considérée comme inexistante -ou uniquement limitée à la production de quelques interneurones- chez les mammifères. L’étude de la neuroplasticité chez l’oiseau chanteur constitue dès lors un modèle tout à fait remarquable et offrant des perspectives nouvelles dans l’étude du cerveau des vertébrés. [less ▲]

Detailed reference viewed: 53 (1 ULg)
Full Text
Peer Reviewed
See detailNeuroplasticité, neurogenèse et dépression : Considérations cliniques
Constant, Eric; PITCHOT, William ULg; Floris, Michel et al

in Acta Psychiatrica Belgica (2009)

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailNeuroprotection par hypothermie contrôlée dans l'encéphalopathie anoxo-ischémique du nouveau-né
GARSPARD, Valérie ULg; VIELLEVOYE, Renaud ULg; RIGO, Jacques ULg

in Revue Médicale de Liège (2012), 67(4), 186-191

Neonatal hypoxic, ischemic encephalopathy is a major cause of death and neurodevelopmental delay. Brain cooling by mild controlled hypothermia is currently the most promising therapy.

Detailed reference viewed: 32 (9 ULg)
Full Text
Peer Reviewed
See detailNeuroprotection with Anaesthetic Agents
Hans, Pol ULg; BONHOMME, Vincent ULg

in Current Opinion in Anaesthesiology (2001), 14(5), 491-6

The term 'neuroprotection' is used to refer to any prophylactic measure that is initiated during the peri-ischaemic period in order to improve neuronal survival. Cell death after ischaemia has an ... [more ▼]

The term 'neuroprotection' is used to refer to any prophylactic measure that is initiated during the peri-ischaemic period in order to improve neuronal survival. Cell death after ischaemia has an immediate, necrotic and a delayed, apoptotic origin. The major biochemical mechanisms that are involved in this process include transmembrane ionic fluxes and intracellular calcium increase, excitotoxicity, free radical formation, peroxynitrite production, release of inflammatory mediators, mitochondrial dysfunction, cytochrome c release, and activation of caspases and transcription factors. Strategies of neuroprotection essentially impact on those biochemical pathways. The label 'neuroprotectant' requires that the therapy has basic properties that are consistent with potential mechanisms of neuroprotection, and that conclusive results are available from animal studies that can be converted into clinical benefit. The present review focuses on neuroprotective effects of anaesthetics and is based on the most recently published reports. [less ▲]

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailNeuropsychiatric Inventory data in a Belgian sample of elderly persons with and without dementia
Squelard, Gilles ULg; Missotten, Pierre ULg; Paquay, Louis et al

in Clinical Interventions in Aging (2012), 2(7), 423-430

Background/aims: This study assesses and compares prevalence of psychological and behavioral symptoms in a Belgian sample of people with and without dementia. Methods: A total of 228 persons older than 65 ... [more ▼]

Background/aims: This study assesses and compares prevalence of psychological and behavioral symptoms in a Belgian sample of people with and without dementia. Methods: A total of 228 persons older than 65 years with dementia and a group of 64 non- demented persons were assessed using the Neuropsychiatric Inventory (NPI) in 2004. Results: Within the group without dementia, the most frequent symptoms were depression, agitation, and irritability. Within the group with dementia, the most common symptoms were depression, irritability, apathy, and agitation. Prevalence of delusions (P [less ▲]

Detailed reference viewed: 87 (14 ULg)
Full Text
Peer Reviewed
See detailNeuropsychiatric syndromes in dementia - Results from the European Alzheimer Disease Consortium: Part I
Aalten, Pauline; Verhey, Frans R. J.; Boziki, Marina et al

in Dementia & Geriatric Cognitive Disorders (2007), 24(6), 457-463

Background/Aims: The aim of this study was to identify neuropsychiatric subsyndromes of the Neuropsychiatric Inventory in a large sample of outpatients with Alzheimer's disease (AD). Methods: Cross ... [more ▼]

Background/Aims: The aim of this study was to identify neuropsychiatric subsyndromes of the Neuropsychiatric Inventory in a large sample of outpatients with Alzheimer's disease (AD). Methods: Cross-sectional data of 2,354 patients with AD from 12 centres from the European Alzheimer's Disease Consortium were collected. Principal component analysis was used for factor analysis. Results: The results showed the presence of 4 neuropsychiatric subsyndromes: hyperactivity, psychosis, affective symptoms and apathy. The subsyndrome apathy was the most common, occurring in almost 65% of the patients. Conclusion: This large study has provided additional robust evidence for the existence of neuropsychiatric subsyndromes in AD. Copyright (c) 2007 S. Karger AG, Basel. [less ▲]

Detailed reference viewed: 81 (12 ULg)
Full Text
Peer Reviewed
See detailNeuropsychological analysis of gait disturbances during dual task in MCI patients
Lekeu, Françoise ULg; Gillain, Sophie ULg; Warzee, Emmanuelle ULg et al

in Journal of Nutrition, Health & Aging (The) (2009), 13(Supp 1),

Detailed reference viewed: 57 (10 ULg)
See detailNeuropsychological testing for the early diagnosis of Alzheimer's disease
Adam, Stéphane ULg

Conference (2006, November 09)

Detailed reference viewed: 8 (0 ULg)
Peer Reviewed
See detailNeuropsychological testing in the locked-in syndrome : preliminary results from a feasibility study.
Schnackers, C.; Majerus, Steve ULg; Van Eeckhout, P. et al

Conference (2003, May 23)

Detailed reference viewed: 10 (4 ULg)
Peer Reviewed
See detailNeuropsychologie de l'apprentissage implicte et de la mémoire procédurale
Meulemans, Thierry ULg

in Revue de Neuropsychologie (2000), 10(1), 129-157

Detailed reference viewed: 66 (10 ULg)